Step-in comfort is of utmost importance for daily trainers, and the Pegasus 39 excels here too. I liked the Pegasus 37 despite its tight toebox and felt that the extra room offered by the Pegasus 38 was a bit much the fit of the Pegasus 39 is perfect, not least because of the inclusion of the Flywire. Speaking of Flywire: the Nike Air Zoom Pegasus 39 is super comfortable. (Image credit: Matt Kollat/T3) Nike Air Zoom Pegasus 39 review: Fit Flywire is also supposed to reduce pressure on the foot which often causes discomfort, especially on longer runs. These are filaments running connecting different parts of the upper and offering a more secure lockdown than even engineered mesh uppers. The Nike Air Zoom Pegasus 39 also features the Flywire technology. The Air Zoom units, when placed correctly, offer great energy returns and reduce weight – after all, the units are filled with air which is lighter than any foam Nike might dream up.

So, unlike the Nike ZoomX Vaporfly NEXT%, the foam of the Pegasus 39 will feel the same after 200 or so miles.Īs for the Air Zoom units, the Pegasus 39 now has two, doubling the amount its predecessor offered.

The former is a resilient foam – Nike's most resilient foam, in fact – that's built to carry you over long miles and designed to retain its good properties over long periods of time. There are two notable technologies involved with the Nike Air Zoom Pegasus 39: React and Air Zoom.

(Image credit: Matt Kollat/T3) Nike Air Zoom Pegasus 39 review: Tech

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